(1) Observation method. based onThermal instrumentationThe characteristics of thermal instruments and the important impact of thermal instruments on the entire gas turbine can be quickly determined by using observation methods during the maintenance process of thermal instruments. By observing the working condition, operational stability, and performance of the instruments, the normal working condition of the instruments can be determined. Comparing the working status of the instrument, identifying any abnormal conditions that may exist during operation, and focusing on analyzing the appearance, readings, and overall working status of the instrument during operation, will provide feedback on whether the instrument is in normal working condition. If there is an abnormality in the instrument, the fault link of the instrument can be discovered through observation, and effective fault elimination measures can be taken to repair and replace the components of the instrument, thus achieving the goal of eliminating instrument faults. Therefore, the observation method can be used to determine

The operation of instruments is an important method in instrument maintenance work, which has a significant impact on the effectiveness and implementation of instrument maintenance.

(2) Short circuit method. In the maintenance process of thermal instruments, in addition to the observation method, the short-circuit method can also be used to check whether there is a fault in the thermal instrument and which type of thermal instrument the fault occurred on. The short circuit method mainly refers to the single check of the system in the circuit system of thermal instruments through short circuit, controlling the operating conditions of the system through short circuit, so that the system can distinguish between pressure instruments, temperature instruments and flow instruments during operation. By separating the short circuit method, it can determine which type of instrument the fault of the thermal instrument occurs on, and which instrument it specifically occurs on. This can improve the analysis efficiency of instrument faults during the working process of the instrument, and has an important impact on improving the judgment effect of instrument faults and solving the problem of instrument fault judgment. By using the short-circuit method, it is possible to detect instrument faults, which plays an important role in improving the effectiveness of instrument fault handling and quickly identifying instrument faults.

(3) Voltage method. The use of voltage method in the troubleshooting and maintenance process of thermal instruments for gas turbines has a significant impact on improving the effectiveness of troubleshooting and maintenance of gas instruments. The voltage method mainly refers to the adjustment of voltage fluctuations in the operation of gas thermal instruments according to their working characteristics and voltage requirements, to check whether the working state of thermal instruments is affected. If the thermal instrument changes in value with the change of voltage, it proves that the heat supply instrument has a certain sensitivity. If the voltage changes and the instrument does not change, or if the amplitude of the change is very low, it indicates that the instrument has malfunctioned and requires maintenance and troubleshooting. Therefore, the voltage method can improve the maintenance effect of thermal instruments, which has an important impact on determining the fault situation of thermal instruments and the location of the fault occurrence. In the working process of this type of instrument, adopting the voltage method appropriately can achieve the diagnosis of thermal control instrument faults.